GitLab

Also introduces an in-process test server.
Also increases logging levels on the mac server.
Also adjusts NSUserDefaults domain to allow test and app code to communicate.

Bug: 1142591, 1119857
Fixed: 1142591, 1119857
Change-Id: Ic4f2f16924aba95a01186f07f488a0e49322fd87
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2518214
Commit-Queue: Joshua Pawlicki <waffles@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Sorin Jianu <sorin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#840616}